For high-quality images, the large-diameter RF mount and short back focus design provides superb control over depth of field, plus the ability to maintain the same aperture throughout the zoom range.

Dust- and weather-resistance in the lens mount, switch panel and all rings allow reliable performance even in difficult weather. The applied sealing helps keep water and dust from entering the lens.

Rugged and precise, this robust lens can endure the rigors of professional use. L-series level vibration shock resistance in the lens barrel helps maintain focus and settings in turbulent situations.

Three aspheric lenses deliver high image quality from center to corner, while two UD lenses help reduce aberrations, delivering sharp images with reduced distortion no matter the subject.

Regardless of focal length or angle of light, Canon's Air Sphere Coating (ASC) significantly reduces lens flare and ghosting for clean results with minimal distractions and aberrations.

Fluorine coatings on the front and rearmost surfaces help prevent dirt and dust from sticking to the lens, making it easy to clean smudges and fingerprints off.